Some sources say Blaise Pascal, a 17th-century French mathematician, invented it in his attempts to create a perpetual motion device.
有些资源说布莱斯·帕斯卡blaisePascal，一位17世纪的法国数学家，在试着创造永动机时发明了它。
Some sources say Blaise Pascal, a 17th-century French mathematician, invented it in his attempts to create a perpetual motion device.
有些资源说布莱斯·帕斯卡blaisePascal，一位17世纪的法国数学家，在试着创造永动机时发明了它。
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